Supporting and locking device.



No. 723,466. PATENTED MAR. 24, 1903. J. B. JOHNSON.

SUPPORTING AND LOCKING DEVICE.

APPLICATION FILED AUG. 20,1902.

H0 MODEL.

' I 'JNVENfOR UNITED STATES PATENT FFICE.

JOSEPH 13. JOHNSON, OF GENEVA,NEW YORK.

SUPPORTING AN ooK Ne DEVICE.

SPECIFICATION forming part of Letters Patent No. 723,466, dated March 24, 1903.

. J' pication filed August 20, 1902. Serial No. 120.422. ill'o model-l To all whom it may concern:

Be it known that I, JOSEPH B. JOHNSON, a citizen of the United States, residing at-Geneva, in the county ofOntario and State of New York, have invented certain new and usefullmprovementsinSupportingand Locking Devices; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention consists of certain'newand useful improvements in devices pertaining to the class of automatic supporting and locking apparatus.

In order that my invention may be clearly understood, I have illustrated it in the accompanying drawings and fully and clearly described it in the annexed specification and claims.

The object of my invention is to provide a simple, inexpensive,.but substantial device by means of which an electric lamp or other object may be simultaneously supported and locked and yet be adapted to be automatically raised and lowered.

In the accompanying drawings, referred to in the specification, Figure 1 is a perspective view of my invention, and Fig. 2 is a side elevation of the same.

Similar letters of reference indicate identical parts throughout.

In the drawings, A A are two metal hooks of like shape and size, the size and strength being suitable to their use; These books are each provided with a curved portion a, a guide I), and a depression 0 and are adapted to be fastened together (a suitable space being left between them) parallel to each other, with their like parts coinciding. I fasten the hooks together in this way by means of a block B, located between the hooks, to which each of the hooks is secured, and also by means of a bolt 0, provided with nuts D D, the said bolt passing through the upper extremities of the books, as at E, and securing said hooks to the arm F, attached to the supporting-pole G. Between the two hooks and mounted on the bolt 0 is a pulley H.

Secured by means of approximately rectangular braces N N to the hooks A A, respectively, are two coincident guides I I, being the same distance apart'as the hooks and so obliquely disposed in: relation thereto that their upper extremities pass beyond a perpendicular droppedfrom the forward edge of the pulley H, while their lower portions are adapted to pass within a convenient distance of the upper extremities of the guides 12 b and continue downwardlya suitable distance.

Approximately midway the extremities of one or both of the guides I I there is provided a stop A stop cl is also placed on one of the hooks'A, near its upper extremity, in such a manner that'it extends forwardly of the hooks beyond the edge of the pulley.

An electric lamp or other object to besuspended is secured to a bar, rod, or analogous device K, provided with lugs or trunnions k and having a ring or similar device, to which a rope, chain, or wire may be secured, said rope being adapted topass upward between the hooks A A and guides I I, over pulley H, and thence over' a pulley or roller provided on the pole G to the base of said pole in the usual manner.

The operation of my improved device is as follows: We will suppose the lamp or other Object to be in its usual suspended position, as shown in the drawings, in which case the bar or rod K, attached to said lamp, will be between the hooks in such a position that the which the rod K will again swing toa perpendicular un til'the projections 70 it come in contact with the stop 01, at which time the rope being loosened the-lamp and its immediate supporting devices will descend, the lugs or projections k 76 being deflected outwardly over the guides I I. By again pulling the rope M the rod K and lamp will be raised perpendicularly until the lugs or projections k 70 come in contact with the guides 12 b, when an oblique upward movement will ICC be imparted to the bar or rod K until the projections k it pass the ends of the guides Z) I) and come in contact with the stop 2', which may be inclined somewhat'to more quickly throw the rod K again into the perpendicular, whereupon, the rope being released, the rod K and lamp will descend until the lugs or projections 70 it rest in the depressions c c of the hooks, as shown.

What I claim, and desire to secure by Letters Patent, is

1. Ina supporting device, the combination with two parallel pieces having an intervening space between them, and terminating at their lower extremities in hook portions, said hook portions having downwardly-extending obliqueprojections,means forconnectingsaid parallel portions together, a pulley mounted between said pieces near the upper extremities, guides mounted on said pieces and disposed above said hook portions at an angle thereto, substantially as described.

2. In a supporting and locking device, the combination with two parallel pieces having an intervening space between them and terminating at their lower extremities in hook portions, said hook portions having downward oblique projections, means for connecting'said parallel pieces together, a pulley mounted between said pieces near their upper extremities, guides mounted on said pieces and disposed above said hook portions at an angle thereto and a stop mounted on one of said parallel pieces above the guides and hook portions, substantially as described.

3. In a supporting and locking device, the combination with two parallel pieces having an intervening space between them and ter-' minating at their lower extremities in hook portions, said hook portions having downwardly-extending oblique projections, means for connecting said parallel pieces together,- a pulleymounted between said pieces near their upper extremities, guides mounted on said pieces and disposed above said hook portions at anangle thereto and provided with a stop or supplemental guide, and a stop mounted on one of the said parallel pieces above the guides and hook portions, substantially as described.

In testimony whereof I afitlx my signa ture in the presence of two witnesses.

JOSEPH B. JOHNSON. Witnesses:

A. 1. Ross, JOHN S. MCDONALD. 

